I find the best option to ship to Canada is First Class International. I can track it in the USA and Canada. I believe that it's faster than Priority. It usually gets by customs to, NO TAX, and my postie deliveries right to my door.
Quoted from mrs_mezelmods:I
-First Class International DOES NOT track (in most cases) beyond the last US scan. This means that we wait, sometimes impatiently like you, for the package to arrive. This is the tradeoff when choosing inexpensive international shipping.